The EXPLAIN command will fail if you use it for other SQL commands, such as data definition language (DDL) or database operations. The EXPLAIN output relative unit costs are used by Amazon Redshift to choose a query plan. Amazon Redshift compares the sizes of various resource estimates to ...
analyzed, and studied and will be considered by the explain command for retrieving the query plan of the statement query specified here. These statements can only include the Data manipulation commands such as UPDATE, INSERT, SELECT, DELETE or CREATE TABLE and cannot include any other...
Definition explain The explain command provides information on the execution of the following commands: aggregate, count, distinct, find, findAndModify, delete, mapReduce, and update. Tip In mongosh, this command can also be run through the db.collection.explain() and cursor.explain() helper meth...
A couple of useful commands Here are a couple of useful commands when dealing with indexes. List of the indexes in a collection Use the getIndexes() method. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 MongoDB...
Preference Match Criteria Dial-peer Commands 1 Called Number incoming called-number <number-string> 2 Calling Number answer-address <number-string> 3 Destination-pattern (ANI) destination-pattern <number-string> 4 Voice-port port <voice-port-number> When No Matches Exist / ...
1. Explain the difference between the following SQL commands: GRANT SELECT ON EMPLOYEE TO user1 GRANT SELECT ON EMPLOYEE TO user1 WITH GRANT OPTION 2. Describe the shadow paging recovery technique. Un What is the difference between a databa...
C# code to send ZPL II commands to zebra printer C# Code to send/receive sms messages through a modem c# Collection was modified. enumeration operation might not execute. C# combobox.SelectedItem returns System.Data.DataRowView. C# compiler console output on compile bothering me C# compiling ...
Commands are typed in the Command Line Interface or terminal. Commands are useful for creating batch processing. An example is pwd which will print present working directory. Answer and Explanation: Let's see what each individual parts of the command do: tar stands for tape ...
Thanks to smartphone agents like Siri, Cortana, and "OK Google," people are slowly getting used to the idea of speaking commands to a computer and getting back spoken replies.Sponsored linksListen instead... or scroll to keep readingYour browser does not support the audio element. Contents ...
OS - Commands in DOS OS - Process States OS - System Components OS - Inter-Process OS - Computer Languages OS - System Architecture OS - Directory Structure OS - Process Management OS - Deadlock Prevention OS - Thread Vs Process OS - File Sharing Other Links Operating System - PDF Version...